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UPSC 2015 • Q18Environment, Ecology & Climate ChangeMedium
Environmental Pollution, Waste Remediation & Forever Chemicals
With reference to fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as a replacement for some of the Portland cement contents of concrete. 3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements.
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